There is a problem with recent versions of Firefox that causes certain fields to not be filled in intermittently. Sometimes it won’t fill them in at all, sometimes partially, sometimes fully.
This causes things like reply and forwarded e-mail not to get the original text filled in.
This is not a flaw with mail, it is a flaw with the regular version of Firefox.
Fixes available this time:
- Install the Developer version of Firefox.
- Downgrade to an older version of Firefox.
- Use a different browser such as Opera, Internet Exploder, or Chrome